Another measure which has proved effective in many cases is to stock 

 the ponds or pools with small fishes, such as minnows, sun fish and gold 

 fish. These eat the larvae and eggs of the mosquito. To render this 

 remedy successful, it is necessary to dig out and deepen all shallow edges 

 of ponds, and to trim the vegetation along their margin, in order that 

 the fish may reach the breeding places. 



The farmer should also apply measures for the extermination of 

 mosquitoes within his house and barn. If a careful search shows the 

 rooms, the cellar or the barn to harbor mosquitoes, the insects may be 

 driven out or done away with by burning pyrethrum or insect powder, 

 the fumes from which stupefy them. They should then be swept up and 

 burned in the range. A mixture of equal weight of gum camphor and 

 pure carbolic acid in crystal form may be evaporated in the rooms, in the 

 proportion of three ounces to 1000 cubic feet, but the liquid is inflammable 

 and the fumes are poisonous, hence great care should be exercised in 

 applying the remedy. Another remedy consists in spreading oil of 

 pennyroyal on a blotting paper, which is placed either on the window sills 

 or about the room, or on the bed pillows in the case of bedrooms; spirits 

 of lavender, used on a handkerchief, are also said to drive mosquitoes 

 away. Tobacco fumes and lighted Chinese punk sticks may be helpful in 

 this respect, and the use of naphthaline or moth balls also repels the 

 insects. 



A careful search should be made in the cellar for any hibernating 

 mosquitoes. Fumigation with sulphur or with formaldehyde should be 

 resorted to in order to clear the cellar; if there are any drain openings, or 

 floor cesspools, these should be freely sprinkled with kerosene oil. 



The protective measures against mosquitoes are perhaps fully as 

 important as the preventive measures spoken of thus far. In order not 

 to attract the insects at night, it is advisable not to use a bright light in 

 bedrooms when retiring. One should always avoid sitting outdoors at 

 night in mosquito-infected districts, in order not to expose oneself to the 

 bite of the malaria-carrying insect. One of the best preventives against 

 mosquito bites is the use of oil of citronella, diluted in olive oil. 



Windows and outside doors of farmhouses should be carefully 

 screened to keep out the mosquitoes. The screens may be either metallic 

 or consist of the cheaper gauze or cotton netting, and the screen doors 

 should preferably have self-closing spring attachments. Beds may be 

 protected with mosquito netting or canopies. The proper screening of 

 farmhouses is a very important measure of protection; hence it is 

 desirable to know where to obtain satisfactory screens. Well-known 

 screens are those made in wooden frames by E. P. Burrowes of Portland, 

 Maine, and the metal-frame screens manufactured by the Higgins Manu- 

 facturing Company of 1133 Broadway, New York City. The screens of 

 both firms are excellent, but rather high priced. 



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